|Pen Sovann, a Khmer Vietminh later turned against his boss|
|Hun Sen, a Khmer Rouge Defector has become a dictator|
December 2, 1978 is a day that Khmer history repeated itself when Hanoi created a Khmer polity to serve its own interest in the third time--the Unified Khmer Issarak 1946, the Khmer Revolutionary Communist Party 1951, and the Khmer National United Front for National Salvation (KNUFNS) December, 02 1978. A creating of the KNUFUS based on two factors: a historical fulfilment and an urgent need of Hanoi. Historically, Vietnam at least failed three times to conquer Cambodia--a failure of Vietnamization in Cambodia by Emperor Minh Mang and his successor Thiev Tree in 1848, a failure to create an autonomous zone for the Khmer Vietminh after Geneva Conference 1954, and a forceful withdrawal of Vietcong troops from Khmer Rouge liberated zones in 1973. Urgently, Pol Pot's troop's reckless and anarchic behaviors along Cambodia-Vietnam borders, created a serious security threat to Vietnamese civilians along the borders. Pol Pot's purge against his own party members created exodus of Khmer Rouge defectors and refugee into Vietnam. After series meetings of the Vietnamese Politburo members chaired by Le Duan, Vietnam solemnly declared that it could no longer coexist with a hostile regime of Democratic Kampuchea ( DK), and it officially set up the KNUFNS on December 2, 1978 to overthrow Pol Pot's regime by fomenting uprising from inside or launching a full scale invasion.
In Summer 1978, Vietnam set up training camps for the former Khmer Vietminh: Pen sovann, Chan Chi, Bou Thang, Chea Soth... along with the Khmer Rouge defectors: Heng Samrin, Chea Sim, Hun Sen, Pol Saroeun, Sar Kheng and so on. An intensive program of military training and indoctrination was introduced to make sure they have enough skill to fight alongside "brother-in-arms" with the Vietnamese troops and still faithful to Hanoi and the Communist camp led by the Soviet Union. By late 1978, a new strong Khmer Rouge defector battalion was commissioned and capable to engage in a tough battle abreast with their Vietnamese comrades. As every thing set ready to go, Le Duc Tho told them that Vietnam would launch a full scale invasion on Cambodia in the upcoming dry season.